Star polymer viscosity index improver for oil compositions

Details Star polymer viscosity index improver for oil compositions Star polymer viscosity index improver for oil compositions

1994-09-09

1995-10-24

Johnson, Jerry D.

Compositions

Electrolytes for electrical devices

525314, 525316, C10M10714, C08F29300, C08F25506, C08F29500

Patent

active

054607396

ABSTRACT:
The present invention includes star polymers which can be used as viscosity index improvers in oil compositions formulated for high performance engines. The star polymers have triblock copolymer arms of hydrogenated polyisoprene-polybutadiene-polyisoprene, which provide excellent low temperature performance in lubricating oils, and can be used in the presence of low pour point depressant concentrations.

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